Pomodoro Principle

The Pomodoro Technique is built on the philosophy that the human brain functions better in sprints, not marathons; meaning you'll get more high-quality work done if you press yourself into working for a short period knowing there's an end in sight after which you'll stop working.

https://lifehacker.com/5828033/how-to-build-your-own-productivity-style-by-remixing-from-the-best